MEDIUM
9th CBSE
IMPORTANT
Earn 100

What is the mass of oxygen which will be present with 6 g of carbon in CO2

Important Questions on Atoms and Molecules

EASY
9th CBSE
IMPORTANT
State law of conservation of mass.
MEDIUM
9th CBSE
IMPORTANT
State law of constant proportions.
MEDIUM
9th CBSE
IMPORTANT
Identify the postulates of Dalton's atomic theory which are no longer supported by the modern knowledge of nature of matter.
EASY
9th CBSE
IMPORTANT
What is the atomicity of AsH3?
MEDIUM
9th CBSE
IMPORTANT
What is the atomicity of CO?
MEDIUM
9th CBSE
IMPORTANT
What is the atomicity of PCl3?
EASY
9th CBSE
IMPORTANT
What is the atomicity of AlCl3?
EASY
9th CBSE
IMPORTANT
Define the term mole. Write the notation of the mole unit.